Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9831865 | RC-IGBT switching pulse control | Annika Lokrantz, Kristoffer Nilsson, Ying Jiang-Häfner, Christer Sjöberg, Wim Van-Der-Merwe | 2017-11-28 |
| 9667133 | Black start of a multilevel voltage source converter | Fabienne Chataignere, Rolf Ottersten, Patrik Sandquist, Roland Siljeström | 2017-05-30 |
| 8779730 | Capacitor discharge in a cell based voltage source converter | Ying Jiang-Häfner, Roland Siljeström | 2014-07-15 |
| 8400796 | Power converter with distributed cell control | Lennart Harnefors, Anders Pettersson, Roland Siljeström, Gunnar Asplund | 2013-03-19 |
| 7239535 | Voltage source converter | Roland Siljeström, Ying Jiang-Häfner | 2007-07-03 |
| 5701241 | Recovery of transmitted power in an installation for transmission of high-voltage direct current | Mats Hyttinen | 1997-12-23 |